Effects of gate geometry and difference of molten iron density by modified Inmold Process

摘要

A new melt combination process, which can produce new functional iron materials, has been developed through numerous experiments by the authors. In the modified Inmold Process, both spheroidized and inoculated melts are collided with each other in a mold cavity to give them a characteristic transitional graphite structure from spheroidal, compacted-vermicular to flake in cast iron. In this study, the effects of the gate cross sectional area, where the gate is placed between the reaction chamber and mold cavity, on the control of graphite morphology was investigated. A water model experiment was carried out in order to survey the behavior of molten iron flow in mold cavity. The transitional graphite structure was controlled by the combination of both gates cross sectional areas. The formation of this graphite structure was investigated by the observation of the graphite structure by this process, simulation by the water model experiment, and analysis of numerous kinds of data concerning molten irondensity produced by researchers.